Marc S. Mayerson

Constantine G. Papavizas is a top attorney recognized by Best Lawyers in the practice area(s) of Admiralty and Maritime Law. Constantine G., who practices law in Washington, District of Columbia, has been recognized since 2008. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Constantine G. is held by other top lawyers in the same geographic and legal practice area.

Jeffrey Davidson is a top attorney recognized by Best Lawyers in the practice area(s) of Environmental Law. Jeffrey, who practices law in Washington, District of Columbia, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jeffrey is held by other top lawyers in the same geographic and legal practice area.

Christopher Mangin, Jr. is a top attorney recognized by Best Lawyers in the practice area(s) of Leveraged Buyouts and Private Equity Law and Mergers and Acquisitions Law. Christopher, who practices law in Washington, District of Columbia, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Christopher is held by other top lawyers in the same geographic and legal practice area.

Don Sperling’s extensive experience handling issues related to businesses, from start-ups to fully matured companies, enables him to evaluate clients’ legal and business concerns and opportunities from multiple angles. He adeptly guides them through short- and long-term considerations for their businesses, whether in the context of a potential merger or acquisition, key hire, a real estate transaction, an employment issue, a business strategic planning consideration or a litigatio...

Jiayan Chen is deeply experienced in the regulatory, transactional and strategic issues that arise when leveraging health information, biospecimens and technology to drive healthcare innovation and quality. She guides stakeholders on privacy compliance and research compliance and in the context of strategic initiatives and collaborations as they seek to harness the power of data, machine learning, DNA sequencing and technologies to develop and deploy new products and solutions and address cha...

Nader Salehi is a partner in the Government, Regulatory and Internal Investigations Practice Group in the Washington, D.C., office of Kirkland & Ellis LLP. Nader represents clients in high-profile and complex internal and government investigations, and has regularly counseled investment banks, fund managers and public companies in matters of enterprise-wide significance. He has led numerous clients through their most significant matters involving the Securities and Exchange Commission (SE...

Paul Oosterhuis is a senior international tax partner representing clients on a wide range of international and U.S. tax matters. Mr. Oosterhuis has extensive experience in international mergers and acquisitions, post-acquisition integration transactions, spin-offs, internal restructurings and joint venture transactions. He also represents multinational companies in nontransactional international tax planning and IRS controversy matters. In recent transactions, Mr. Oosterhuis has represented:...

Philip Tucker Evans is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Bankruptcy. Philip Tucker, who practices law in Washington, District of Columbia, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Philip Tucker is held by other top lawyers in the same geographic and legal practice area.

Timothy J. V. Walsh is a top attorney recognized by Best Lawyers in the practice area(s) of Energy Law. Timothy J. V., who practices law in Washington, District of Columbia, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Timothy J. V. is held by other top lawyers in the same geographic and legal practice area.

Barry J. Hurewitz is a top attorney recognized by Best Lawyers in the practice area(s) of Privacy and Data Security Law. Barry J., who practices law in Washington, District of Columbia, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Barry J. is held by other top lawyers in the same geographic and legal practice area.